[Openbts-discuss] Cell Broadcast

[Chris N. <ch...@fl...>]

Hi I'm interested in using OpenBTS to generate cell broadcast messages.

I've checked this post:

https://sourceforge.net/mailarchive/message.php?msg_id=26666479

I've implemented my own mods and very much enjoyed looking at the
OpenBTS internals.

Could you possibly have a look at the following pcap and tell me if I'm
close? I'm not seeing anything on device though I think the structure is
just about right and I'm not sure if the reassembled message length
warning is valid. You will see the System Info 4 message is in there as
well:

http://dev.floor51.com/projects/openbts/trace/cbspage-20130610.pcap

I have an Ettus USRP and a development SIM and I'm using a Blackberry
device. I've set the search list in the SIM and it shows up device side
and I've enabled reception for channel 50.

One item is that the MNC of the SIM is 30 whereas I'm broadcasting as
29. Got a few problems changing it at the mo and wondering if CBS
doesn't work for non-home SIMs.

Thanks for any help
Chris